Show: 25 50 75 100 Results

Search results: 25 out of 154

Shear Strengthening of Reinforced Concrete Deep Beam using Near Surface Mounted Steel Rebars

Author name: عبد الله سكر حسن العيساوي
Supervisor name: حيدر حسين كمونة
General topic: Civil Engineering
Specific topic: Structural Engineering
University: University of Kufa - College Of Engineering - Department Of Civil Engineering
Language: English
University location: Najaf

Modeling to Predict the Salt Transport between a Scale Model Estuary and the Unconfined Aquifer with Groundwater Flow

Author name: عبير ابراهيم يحيى
Supervisor name: Heck, Howell
General topic: Civil Engineering
Specific topic: Civil Engineering
Degree: Doctorate
University: University of Kufa - College Of Engineering - Department Of Civil Engineering
Language: English
University location: Najaf
Key words:
  • Predict the salt transport, estuary, unconfined aquifer, groundwater flow

Behavior of Reactive Powder Reinforced Concrete Deep Beams

Author name: اصيل سلطان رضا
Supervisor name: رغيد فتحي مكي | علي طالب جاسم
General topic: Civil Engineering
Specific topic: Structural Engineering
Degree: Master
University: University of Kufa - College Of Engineering - Department Of Civil Engineering
Language: English
University location: Najaf
Key words:
  • Theoretical Study, 3DFinite Element, Reactive Powder concrete, Deep beams .

تاثير التكهفات على استقرارية سد اثناء جريان الماء == THE INFLUENCE OF CAVITIES ON THE STABILITY OF DAM DURING WATER FLOW

Author name: مروه حميد عبد الله
Supervisor name: ليث جواد عزيز
General topic: Civil Engineering
Specific topic: Hydraulic Structure Engineering
Degree: Master
University: University of Kufa - College Of Engineering - Department Of Civil Engineering
Language: Arabic
University location: Najaf
First pages:

تاثير اوكسيد الالمنيوم النانوي على البنيه المجهرية والخواص الميكانيكية للزركونيا السيراميكية المتعددة البلورات الرباعية المستقرة باليتريا == The Effect of Nano-Aluminum Oxide on the Microstructure and Mechanical Properties of 3-Yttira Tetragonal Zirconia Polycrystals Ceramic

Author name: عثمان عبد الحسين البدري
Supervisor name: ايمان جابر عبد | محمد طالب الخفاجي
General topic: Production engineering metallurgy and materials
Specific topic: Materials Engineering
Degree: Master
University: University of Kufa - College Of Engineering - Department Of Materials Engineering
Language: English
University location: Najaf
First pages:

تحضير وخواص المواد المركبة لراتنج نشا – يوريا المطور : مطاط طبيعي == Preparation and Characterization of Natural rubber modified Starch – Urea composite

Author name: صابرين جبار فايز
Supervisor name: اسماعيل مسلم علوان السلامي | حسن هادي علي العلاق
General topic: Production engineering metallurgy and materials
Specific topic: Materials Engineering
Degree: Master
University: University of Kufa - College Of Engineering - Department Of Materials Engineering
Language: English
University location: Najaf
First pages:

دراسة تحسين الخواص المجهرية والميكانيكية لحديد الصب المارتنسايتي العالي الكروم بالمعاملات الحرارية == Study the Improvement of Microstructure and Mechanical Properties of Martensitic High Chromium Cast Iron by Heat Treatments

Author name: اسراء فايز يوسف
Supervisor name: علي حسين عتيوي
General topic: Production engineering metallurgy and materials
Specific topic: Materials Engineering
Degree: Master
University: University of Kufa - College Of Engineering - Department Of Materials Engineering
Language: English
University location: Najaf
First pages:

دراسة تاثير اجهاد الشد المسبق على الخواص الميكانيكية لطبقة البيد في الاطار == Study the Effect of Pre-Tension on the Mechanical Properties of Tire Bead Ply

Author name: احمد عادل كاظم الغانمي
Supervisor name: موجد هادي عناد الحاتمي | علي صادق ياسر العذاري
General topic: Production engineering metallurgy and materials
Specific topic: Materials Engineering
Degree: Master
University: University of Kufa - College Of Engineering - Department Of Materials Engineering
Language: English
University location: Najaf
First pages:

استخدام برنامج EverStressFE لتحليل الاجهاد والانفعال للرصف المرن == Utilizing EverStressFE Software to Analyze Stress-Strain of Flexible Pavement

Author name: علي صالح سعد جويد العيساوي
Supervisor name: احلام خضير رزاق الزريجاوي
General topic: Civil Engineering
Specific topic: Road and Transportation Engineering
Degree: Master
University: University of Kufa - College Of Engineering - Department Of Civil Engineering
Language: English
University location: Najaf
Key words:
  • Flexible Pavement Analysis
  • Finite Element Method
  • EverStressFE Software
  • Burmister's Layered Theory
  • Stress and Strain
  • Fatigue and Rutting
  • CBR Test
  • DCP Test
First pages:
Abstract: Road transport is Iraq's primary mode of transportation; although other types of pavement have been used, flexible paving is the most common in most Iraqi governorates. In general, the design life of flexible paving layers for Iraqi roads is not met; structural and functional failures appear early, resulting in significant yearly maintenance costs. The most prevalent failures are fatigue and rutting, which various reasons may cause. One of these reasons is the inaccuracy in design resulting from using empirical design techniques, in addition to the mistakes due to the complications of the manual calculations of these traditional methods; another reason could be the imprecise estimation methods of the resilient modulus of the pavement layers due to a lack of necessary equipment.
This study presents a feasible methodology for analyzing flexible pavement structures by the Finite Element Method (FEM) implemented using EverStressFE, which is (3D-Finite Element) software tailored for flexible pavement structures. The EverStressFE results were compared with the Kenlayer software for the Burmister multi-layer theory. Both software packages were utilized to perform 152 simulations for various pavement models. The statistical quality of the convergence degree between the two software's outputs was evaluated. Levene's and t-tests were used to compare the means and variances of tensile and compressive strains.
A Dynamic Cone Penetrometer (DCP) tester was fabricated to provide a tool for investigating the characteristics of the implemented pavement layers. The fabrication process complied with the American Society for Testing and Materials (ASTM) standards. Before calculating distress models for Al-Mujama'at Road, one of Najaf's roads used as a case study, the correlation equation between DCP and the California Bearing Ratio (CBR) was established using lab tests.
The coefficient of determination (R2) for the DCP and CBR correlation equation was found to be 0.97, indicating that the DCP can be used as an alternative to the CBR test. As for the comparison study, EverstressFE is more convenient and straightforward than traditional design methods; it facilitates comparing pavement components, and its results are similar to Burmister's multi-layer theory. For Al-Mujama'at Road analysis, Single Axle Dual Tires load caused a fatigue damage factor of 13.9E-07 and a rutting damage factor of 9.86E-07, indicating that the pavement lifespan is shorter by 29% due to fatigue damage compared to pavement life concerning rutting deformation. In other words, there is no good pavement component utilization for balancing the pavement life of distress models, which prompted an investigation into the sensitivity of these models to each of the pavement properties, which concluded that the thickness of the subbase layer and the elasticity modulus of the subgrade are the key components that control the balance point between fatigue and rutting in pavement life considerations.
Full text:
Summary:
References:

تاثير غبار السليكا على خليط الاسفلت البارد == Effect of Silica Fume on Cold Asphalt Mixture

Author name: حنين حمزة عباس
Supervisor name: احلام خضير رزاق الزريجاوي
General topic: Civil Engineering
Specific topic: Road and Transportation Engineering
Degree: Higher Diploma
University: University of Kufa - College Of Engineering - Department Of Civil Engineering
Language: English
University location: Najaf
First pages:

تحضير وتوصيف الاسمدة البطيئة الاطلاق المغلفة بواسطة الصوف / الستايرين - بوتادين كوبوليمر == Preparation and Characterization of Slow-Released Fertilizers Encapsulated by Wool/Styrene Butadiene Rubber Copolymer

Author name: فاطمة صباح عبد الكرعاوي
Supervisor name: اسماعيل مسلم علوان السلامي
General topic: Production engineering metallurgy and materials
Specific topic: Materials Engineering
Degree: Master
University: University of Kufa - College Of Engineering - Department Of Materials Engineering
Language: English
University location: Najaf
Key words:
  • Wool, SBR, FTIR, Urea release, Rheological and mechanical properties
First pages:

تحضير وتشخيص الالياف المتراكبة المحضرة بطريقة البرم الالكتروني وتطبيقاتها في ضمادات الجروح == Preparation and Characterization of Nanofibers Composite by Electrospinning Method for Wound Healing

Author name: ثمر علي عبد الامير
Supervisor name: صباح مريسن ضهاب العبودي
General topic: Production engineering metallurgy and materials
Specific topic: Materials Engineering
Degree: Master
University: University of Kufa - College Of Engineering - Department Of Materials Engineering
Language: Arabic
University location: Najaf
Key words:
  • Nanofibers, ZnO, Ag, Nanoparticles, wound healing, electrospinning
First pages:

اعداد وتوصيف الكاربون المنشط المنتج من قصب البردي العراقي كبوليمر حياتي طبيعي باستخدام عوامل منشطة مختلفة وسلوكه الامتزازي == Preparation and Characterization of Activated Carbon Produced from Iraqi Reeds Papyrus as Natural Biopolymer by Different Activated Agents and its Adsorptive Behavior

Author name: مريم ثابت ضيول
Supervisor name: اسماعيل مسلم علوان
General topic: Production engineering metallurgy and materials
Specific topic: Materials Engineering
Degree: Master
University: University of Kufa - College Of Engineering - Department Of Materials Engineering
Language: English
University location: Najaf
Key words:
  • Active carbon, NaOH3, , H3PO4, Adsorption, Heavy metal
First pages:

دراسة تحسين مقاومة البلى لسبائك المحامل الانزلاقية نوع برونز نحاس - قصدير باضافة نسب مختلفة من عنصر الانتيمون == study the improvement of wear resistance of tin bronze bearing alloys by adding different amounts of antimony

Author name: حوراء عبد الحسين كاظم
Supervisor name: ايمان جابر عبد
General topic: Production engineering metallurgy and materials
Specific topic: Materials Engineering
Degree: Master
University: University of Kufa - College Of Engineering - Department Of Materials Engineering
Language: English
University location: Najaf
Key words:
  • wear , friction, tribology, worn surface ,tin bronze, hardness, casting
First pages:

دراسة البنية المجهرية والخواص الميكانيكية لوصلات من النحاس النقي/ سبيكة الالمنيوم AA5052 ملحومة بالخلط الاحتكاكي النقطي == Study the Microstructure and Mechanical Properties of Pure Copper /Aluminium Alloy AA5052 Joints by Friction Stir Spot Welding

Author name: محمد كريم مدلول
Supervisor name: ايمان جابر عبد
General topic: Production engineering metallurgy and materials
Specific topic: Materials Engineering
Degree: Master
University: University of Kufa - College Of Engineering - Department Of Materials Engineering
Language: English
University location: Najaf
Key words:
  • Zinc oxide nanoparticles.FSSW .Shear tensile force
First pages:

الترسيب بالدقائق المشحونة للطلاءات المتراكبة النانوية (الهايدروكسي ابيتايت / اوكسيد التيتانيوم) على الفولاذ المقاوم للصدا المزدوج للتطبيقات الطبية الاحيائية == Electrophoretic Deposition of Hydroxyapatite / Titanium Oxide Nanocomposite Coatings on Duplex Stainless Steel for Biomedical Applications

Author name: محمود شاكر ناصر
Supervisor name: علي سبع حمود
General topic: Production engineering metallurgy and materials
Specific topic: Materials Engineering
Degree: Master
University: University of Kufa - College Of Engineering - Department Of Materials Engineering
Language: English
University location: Najaf
Key words:
  • EPD; Duplex Stainless Steel; Corrosion resistance, Hydroxyapatite/Titania
First pages:

تقوية البلاطات الخرسانية المسلحة المستمرة - احادية الاتجاه والمعرضة لاحمال ساكنة باستخدام تسليح مطمور قرب السطح == Strengthening of Continuous One- Way Reinforced Concrete Slabs under Static Loads with Near Surface Mounted Reinforcement

Author name: دعاء يعقوب عبد السادة
Supervisor name: حيدر حسين حريب كمونة
General topic: Civil Engineering
Specific topic: Structural Engineering
Degree: Master
University: University of Kufa - College Of Engineering - Department Of Civil Engineering
Language: English
University location: Najaf
Key words:
  • تسليح المطمور قرب السطح تقوية البلاطات الخرسانية المستمرة اطوال القضبان المطمورة قرب السطح برنامج العناصر المحددة الانسيس (ANSYS) اعادة توزيع الاحمال
First pages:

تاثير قدرة الدوران على اداء المفصلات البلاستيكية في الهياكل الخرسانية المسلحة المعرضة لاحمال ديناميكية == Effect of rotational capacity on plastic Hinges performance in R.C. structures subjected to Dynamic loads

Author name: سامر عبد الاله دهش العذاري
Supervisor name: علي ناجي عطية
General topic: Civil Engineering
Specific topic: Structural Engineering
Degree: Master
University: University of Kufa - College Of Engineering - Department Of Civil Engineering
Language: English
University location: Najaf
Key words:
  • المفصلات البلاستيكية قابلية الدوران الاحمال الديناميكية الخرسانة المسلحة
First pages:

سلوك الانحناء للعتبات المستمرة المكونة من خرسانة المسحوق الفعال == Flexural Behavior of Continuous Reinforced Reactive Powder Concrete Beams

Author name: رواء رحيم كريم
Supervisor name: حسنين محمد ذياب
General topic: Civil Engineering
Specific topic: Structural Engineering
Degree: Master
University: University of Kufa - College Of Engineering - Department Of Civil Engineering
Language: English
University location: Najaf
Key words:
  • Reactive powder concrete, steel fibre, flexure behaviour
First pages:

تقوية الاعتاب الخرسانية المسلحة العميقة ذات فتحات باستخدام اسياخ الحديد المطمورة قرب سطح الخرسانة == Strengthening of Reinforced Concrete Deep Beams with Opening by Near Surface Mounted Steel Bar

Author name: لبنى رعد جاسم
Supervisor name: حيدر حسين حريب
General topic: Civil Engineering
Specific topic: Structural Engineering
Degree: Master
University: University of Kufa - College Of Engineering - Department Of Civil Engineering
Language: English
University location: Najaf
Key words:
  • Deep Beam, Near Surface Mounted, Openings, Shear Strengthening, Strengthening Configuration
First pages:

سلوك العتبات الخرسانية العميقة المسلحة المستمرة الحاوية على فتحات والمقواة باستخدام شرائح الكاربون == Behavior of Reinforced Concrete Continuous Deep Beams with Opening Strengthened Using CFRP Strip

Author name: حيدر نجاح عباس
Supervisor name: محمد عبد عطية
General topic: Civil Engineering
Specific topic: Structural Engineering
Degree: Master
University: University of Kufa - College Of Engineering - Department Of Civil Engineering
Language: English
University location: Najaf
Key words:
  • CFRP.Reinforced Concrete
First pages:

التصرف الانشائي للعتبات الخرسانية ذاتية الرص العميقة الحاوية على فتحات المقواة بالاياف الكاربونية == Structural Behavior of Self Compacting Concrete Deep Beams with Opening Strengthened by CFRP

Author name: حسين عبد الزهره عبد الحسين
Supervisor name: رغيد فتحي مكي
General topic: Civil Engineering
Specific topic: Structural Engineering
Degree: Master
University: University of Kufa - College Of Engineering - Department Of Civil Engineering
Language: English
University location: Najaf
Key words:
  • FEM.ANSYS.400m
First pages:

تصرف الاعمدة المركبة المتكونة من الحديد والخرسانة المعرضة الى درجات الحرارة == Behavior of Composite Steel - Concrete Column Exposed to Elevated Temperatures

Author name: احمد حسين علي محمد
Supervisor name: امجد حميد عبد الرزاق
General topic: Civil Engineering
Specific topic: Structural Engineering
Degree: Master
University: University of Kufa - College Of Engineering - Department Of Civil Engineering
Language: English
University location: Najaf
First pages:

تقوية العتبات الحديدية الخليوية باستخدام الدعامات حول الفتحات == STRENGTHENING OF CELLULAR STEEL BEAMS USING STIFFENERS AROUND THE OPENINGS

Author name: امير حسن محمد
Supervisor name: حاكم سعيد محمد
General topic: Civil Engineering
Specific topic: Structural Engineering
Degree: Master
University: University of Kufa - College Of Engineering - Department Of Civil Engineering
Language: English
University location: Najaf
First pages:

تحسين مقاومة البلى الميكانيكي لانابيب نقل الاسمنت الهوائية باستخدام طلاء نانوي من كربيد التنجستن == Improving Mechanical Wear Resistance of Cement Pneumatic Conveyor Pips Using Nano Coating of Tungsten Carbide

Author name: ليث زبال عبد الكريم
Supervisor name: علي صادق ياسر
General topic: Mechanical Engineering
Specific topic: Applied Mechanics
Degree: Master
University: University of Kufa - College Of Engineering - Department Of Mechanical Engineering
Language: English
University location: Najaf
First pages:
1 2 3 4 ... 7